68 lines
1.5 KiB
Go
68 lines
1.5 KiB
Go
package server
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import (
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"fmt"
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"local/oauth2"
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"local/storage"
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"net/http"
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"net/url"
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"github.com/google/uuid"
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)
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func (s *Server) authorize(w http.ResponseWriter, r *http.Request) {
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s.limiter.Wait(r.Context())
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if r.Method != "POST" {
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http.NotFound(w, r)
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return
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}
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id := r.FormValue("username")
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user, ok := s.getUser(id)
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if !ok {
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http.Error(w, "unknown user", http.StatusForbidden)
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return
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}
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access, ok := s.getAccess(user)
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if !ok {
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http.Error(w, "no oauth for user", http.StatusForbidden)
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return
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}
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q := r.URL.Query()
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redirect := q.Get(oauth2.REDIRECT)
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q.Del(oauth2.REDIRECT)
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r.URL.RawQuery = q.Encode()
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if redirect != "" {
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url, _ := url.Parse(redirect)
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if url.Scheme == "" {
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url.Scheme = "http"
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}
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values := url.Query()
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values.Set(oauth2.COOKIE, access)
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url.RawQuery = values.Encode()
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http.Redirect(w, r, url.String(), http.StatusSeeOther)
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} else {
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fmt.Fprintln(w, "OK")
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}
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}
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func (s *Server) genAuth(user string) {
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access := uuid.New().String()
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token := uuid.New().String()
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s.store.Set(user, []byte(access), ACCESS)
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s.store.Set(access, []byte(token), TOKEN)
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}
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func (s *Server) getAccess(user string) (string, bool) {
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access, err := s.store.Get(user, ACCESS)
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if err == storage.ErrNotFound {
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s.genAuth(user)
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access, err = s.store.Get(user, ACCESS)
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}
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return string(access), err == nil
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}
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func (s *Server) getToken(access string) (string, bool) {
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token, err := s.store.Get(access, TOKEN)
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return string(token), err == nil
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}
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